package com.example.springbook.book.controller;

import com.example.springbook.book.constant.Constants;
import com.example.springbook.book.enums.BookStatusEnum;
import com.example.springbook.book.model.BookInfo;
import com.example.springbook.book.model.PageRequest;
import com.example.springbook.book.model.PageResponse;
import com.example.springbook.book.model.Result;
import com.example.springbook.book.service.BookService;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpSession;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@Slf4j
@RequestMapping("/book")
@RestController
public class BookController {
    @Autowired
    private BookService bookService;

    @RequestMapping("/addBook")
    public String addBook(BookInfo bookInfo) {
        log.info("添加图书, bookInfo:{}", bookInfo);
        //1.参数校验
        if (!StringUtils.hasLength(bookInfo.getBookName())
                || !StringUtils.hasLength(bookInfo.getAuthor())
                || bookInfo.getCount() == null
                || bookInfo.getPrice() == null
                || !StringUtils.hasLength(bookInfo.getPublish())
        ) {
            return "参数不合法,请重新检查";
        }
        try {
            //2.插入数据
            Integer result = bookService.insertBook(bookInfo);
            if (result == 1) {
                return "";
            }
        } catch (Exception e) {
            log.error("数据插入异常, e:", e);
        }
        return "数据插入失败,请联系管理员";
    }

    @RequestMapping("/getListByPage")
    public Result<PageResponse<BookInfo>> getListByPage(PageRequest pageRequest, HttpServletRequest request) {
        log.info("获取图书列表,pageRequest:{}", pageRequest);

//        HttpSession session = request.getSession(false);
//        if (session==null || session.getAttribute(Constants.SESSION_USER_KEY)==null ||
//                !StringUtils.hasLength((String)session.getAttribute(Constants.SESSION_USER_KEY))){
//            //用户未登录
//            return Result.unlogin();
//        }

        PageResponse<BookInfo> bookInfoPageResponse = new PageResponse<>();
        try {
            System.out.println("准备进入Service");
            bookInfoPageResponse = bookService.getListByPage(pageRequest);
        } catch (Exception e) {
            log.error("获取图书列表失败");
            return Result.fail();
        }

        return Result.success(bookInfoPageResponse);
    }

    @RequestMapping("/queryBookById")
    public BookInfo queryBookById(Integer bookId) {
        log.info("获取图书信息,bookId:" + bookId);
        //参数校验,不能为null,不能<=0....
        //try catch
        return bookService.queryBookById(bookId);
    }

    @RequestMapping("/updateBook")
    public String updateBook(BookInfo bookInfo) {
        log.info("更新图书,bookInfo: {}", bookInfo);
        try {
            Integer result = bookService.updateBook(bookInfo);
            if (result > 0) {
                return "";
            }
            return "图书更新失败";
        } catch (Exception e) {
            log.error("更新图书失败, e:", e);
            return "数据库操作失败";
        }
    }

    @RequestMapping("/deleteBook")
    public String deleteBook(Integer bookId) {
        log.info("删除图书,bookId: {}", bookId);
        try {
            BookInfo bookInfo = new BookInfo();
            bookInfo.setId(bookId);
            bookInfo.setStatus(BookStatusEnum.DELETED.getCode());
            Integer result = bookService.updateBook(bookInfo);
            if (result > 0) {
                return "";
            }
            return "图书删除失败";
        } catch (Exception e) {
            log.error("删除图书失败,e:", e);
            return "数据库操作失败!";
        }
    }

    @RequestMapping("/batchDeleteBook")
    public Boolean batchDeleteBook(@RequestParam List<Integer> ids) {
        log.info("批量删除图书,ids:{}", ids);
        try {
            //执行SQL
            bookService.batchDelete(ids);
            return true;
        } catch (Exception e) {
            log.info("批量删除图书失败,ids:{}", ids);
        }
        return false;
    }
}
